9.13 Application:
Loop control with
Speed
adaption
-_
Among
others, a loop control is required for the transport of
material by means of two conveyor belts. The
slack
which
occurs
between the two conveyor belts is kept
constant
by the loop
control.
To ac:tivate the loop control the
code
Cl
89 must be set to -0- but
only with activated controller inhibit.
Usually the field frequency
Pilot
control is not used for the loop
control. Therefore
e.g.
2V has to be entered
under
Cl80
as
diameter
setpoint. Afterwards the
Pilot
control has to be set such
that the
setpoint
of the field frequency CO64 corresponds to the act.
value of the field frequency
CO50.
The
FYD
controller must be set in the same way as the
dancer-
Position
controller.
Caution!
The
direction
of rotation may be reversed if the loop controller is set
-
too high, the ouput is e.g. negative and the
master
frequency input
is positive.
dancer-pos.
controller
Parameter (Factory setting is printed in
hold)
-O- Multiplication
of the dancer-pos. controller
output with the main
setpoint
-l-
Dancer-Dosition
controller overlav
Acceptance
[SH + PRG]
-.
hue
119
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